CHE-111 Summer 2016 Name k/E \(
Exam 1 June 20, 2016
Show work for partial credit.
1. Indicate the number of significant figures, then convert to scientific notation. (4 pts)
11180100 :1 8.151 X10 13197020 i Q (Mix 10
2. Complete the following calcu
CHE111 Quiz Chapters 4,5 June 16, 2016 Name KE 1
Each question is worth 2 points. Show work for partial credit.
1. Circle the correct element:
a. is the most metallic @ B Br Bi
b. has the largest atomic radius 5 Si Se @
c. gives up electrons most easily C
Chem 202C, Quiz 4
April 4, 2013
1. Which, if any, of the following processes is spontaneous under the specified conditions?
H2O(l) H2O(s) at 25C
CO2(s) CO2(g) at 0C
2H2O(g) 2H2(g) + O2(g)
C(graphite) C(diamond) at 25C and 1 atm press
Chem 202C, Quiz 3
March 7, 2013
1.Circle the conjugate acid of NH3.
C) NH2- D) NH4
2. Circle the conjugate base of HSO4 in the reaction below.
CO32 + HSO4
HCO3 + SO42
3. What is the [OH-] for a solution at 25C that has [H3O+]
Chem 202C, Quiz 2
February 26, 2013
1. Calculate Kc for the reaction 2HI(g)
H2(g) + I2(g) given that the concentrations of each
species at equilibrium are as follows: [HI] = 0.85 mol/L, [I2] = 0.60 mol/L,
[H2] = 0.27 mol/L.
Kc = [HI] x [I2] / [HI]2
Chem 202C, Quiz 1
January 29, 2013
1. Circle the types of intermolecular forces exist between CH3Cl molecules? (12.11)
a. London dispersion forces;
b. dipole-dipole interactions;
c. hydrogen bonding;
d. ion-dipole interactions
2. Circle the substan
What is the pH of a 0.10 M solution of acetic acid? (Ka = 1.8 x 10-5)
2. The pH of a weak acid solution is 4.52 at 25 C. Calculate Ka for the acid if the initial acid
concentration was 0.019 M.
(4 points) Problem 16.61
[H+] = 10 4.52 = 3.
1. In the following reaction, how is the rate of the change of the concentration of hydrogen
related to the rate of the change in the concentration of water? (Write the reaction rate
expressions as change in concentration/change in time, [A]/t).
Name:_ (52 pts)
1.Which, if any, of the following processes is spontaneous under the specified conditions?
A) H2O(l) H2O(s) at 25C
B) CO2(s) CO2(g) at 0C
C) 2H2O(g) 2H2(g) + O2(g)
D) C(graphite) C(diamond) at 25C and 1 atm pressure
None of these is spo